JPH02676Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sample collecting device that allows easy measurement of the total amount of samples by collecting reduced fractions and accumulating reduced fractions.

Conventionally, when collecting samples over time, it is necessary to collect samples from a storage container in a separate container each time, or when measuring the total amount, a large storage container or bag is required, which reduces the time and effort of transferring samples. It was also inconvenient to store and store the container.

The present invention solves the above-mentioned drawbacks, especially in order to sample a fixed amount of a sample at an arbitrary time or to measure the total amount over time, especially when the amount of the sample changes over time.

Recently, a urine volume measuring device has been devised in Japanese Patent Application Laid-Open No. 57-82744 as an instrument for achieving this purpose. In principle, this urine volume measuring device is extremely excellent for measuring the total amount of urine by collecting the reduced fraction of a sample and accumulating the reduced fraction. The inventor of this urine volume measuring device was born in the Showa period, noting that by providing a path switching pot with a specific structure in the communication section and outlet at the bottom of the urine volume measuring device, it would become an excellent measuring device that was easier to handle. In 1957, he devised a sample collection device based on Utility Model Registration Application No. 129834.

The present invention has the same principles, functions, and basic structure, but the passage switching mechanism is a plunger type that operates in a linear direction, which is different from the circular operation in the above-mentioned invention, thereby improving handling. The object of the present invention is to provide a sample collection device that is easy to use and has even better operability.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a sectional view showing the entire sample collection device of the present invention.

The container consists of two chambers: a tubular container 1 for collecting a sample and a capillary container 2 for collecting the sample in a reduced fraction. The container has an outlet 3 at the bottom near the outlet 4. The capillary container 2 has a first
As shown in the figure, it may be located inside the tubular container 1 to form a double container, or it may be located outside the tubular container 1; Preferably, they are integrated. If it is located externally, it may be preferable because it simplifies operations when checking the amount of stored sample or discarding unnecessary samples from the tubular container 1.

If the ratio of the cross-sectional areas of the tubular container 1 and the capillary container 2 at the same height is kept constant, accurate reduction of the sample becomes possible, and the total amount can be calculated backwards from the amount of sample in the capillary container 2. You can easily know the amount.
In order to make the cross-sectional area ratio of the tubular container 1 and the thin tubular container 2 constant, each shape is easily hollow cylindrical, but the shape is not limited to this, and each cross section can be square, rectangular, or elliptical. The cross-sectional area of the upper and lower parts may be the same, or the cross-sectional area of the upper part may be larger than that of the lower part.

Further, each of these containers is preferably molded from a transparent material, such as various transparent plastic resins, so that the condition and amount of the sample can be easily checked visually.

A plunger-type passage switching mechanism 5 is provided between the outlet 3 of the tubular container and the outlet 4 of the thin tubular container, and a storage tank 6 may be attached to the lower part if necessary. When attaching the storage tank 6,
Even if it is integrated with the tubular container 1 and the thin tubular container 2,
It may be of a fitting type, such as by screwing or fitting, and may also be provided with a discharge port or a cap for discharging the stored liquid.

The passage switching mechanism 5 is composed of a body 7 and a core 8, as shown in FIG.
A first hole 9 and a second hole 10 are located at positions corresponding to
It further has a third hole 11 on the opposite side of the second hole 10. Further, the core 8 is provided so as to be able to move forward and backward within the body 7, and the core 8 is for communicating between the first hole 9 and the second hole 10 of the body.
It has a communication passage 12 extending in the longitudinal direction, and has a second hole 10 in a portion that communicates with the second hole 10 when the core 8 is advanced toward the back side of the body 7 from that position. A through hole 13 is provided that radially crosses the core 8 to communicate with the third hole portion 11 . At this time, the first hole 9 is
occluded by the sides of the The core is provided with a handle 14 for linear movement of the core within the body as required. The handle 14 may be operated manually for both moving forward and backward, or it may be operated automatically by releasing the fingers gripping it, or it may be self-retained after moving forward and return to its original position by pushing the handle 14 again. Any conceivable method may be used, including the method of retreating with

FIG. 2a shows the discharge port 3 of the tubular container and the discharge port 4 of the thin tubular container by operating the core 8 of the passage switching mechanism 5.
The figure shows a state in which the switching mechanism 5 is communicated through the first hole 9 of the body, the communication passage 12 of the core, and the second hole 10 of the body. In this state, the sample injected into the tubular container is accumulated in the tubular container and the capillary container, the levels of both containers are the same, and a large amount of the sample is condensed into the capillary container.

If the capillary container is marked with a scale, this value can be calculated backwards by multiplying it by a constant constant based on the cross-sectional area, and the total amount of the sample can be easily determined.

In FIG. 2b, the core is advanced, and the outlet 3 of the tubular container and the outlet 4 of the capillary container are blocked, and the outlet 4 of the capillary container is connected to the second hole 10 of the body;
Through-hole 13 in the core and third hole 11 in the body
It shows a state where it is opened to the outside or to the storage tank 6 through. In this state, the sample that has been reduced into a tube-shaped container flows out to the bottom, and if you collect this, you can easily collect the sample in the reduced state, and perform various analyses.
Can be used for quantitative determination.

Furthermore, the total amount of the sample can also be easily determined by calculating backwards from this reduced sample amount.

After completing the sample collection operation in this way,
When the core 8 is moved back, the state shown in FIG. 1a is returned, and the outlet 3 of the tubular container and the outlet 4 of the thin tubular container are again in communication via the communication passage 12 of the core. As mentioned above, the core 8 may be returned manually or automatically by using the repulsive force of the spring-like member 15, or it can be locked in the forward and backward positions and released by simply pressing it. There is no problem in providing various applicable mechanisms such as a method to do so.

If the storage tank 6 is installed at the bottom,
Depending on the structure of the storage tank, it may be difficult for the reduced sample to flow to the bottom through the switching mechanism in a sealed state. In this case, as shown in Figure 2, Air hole 16 on the side of
If air grooves 17 are provided on the side of the core 8, air can be vented through these grooves, and the sample flows out smoothly. Of course, when the sample is not flowing out, the air hole 16 and the air groove 17 are not communicated with each other, as shown in FIG. 2a, and the sample liquid in the storage tank 6 does not leak to the outside.

As detailed above, the sample collection device of the present invention can easily reduce various collected samples by operating the passage switching mechanism and collect reduced samples for various analyzes and observations. , the total amount can be measured by calculating backwards from the reduced sample amount.

It is extremely suitable for applications where samples are collected continuously or discontinuously over time, such as for collecting samples of various types of wastewater, and for collecting samples of various biological fluids such as urine, blood, and pus. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 shows a schematic diagram of the sample collection device of the present invention, and FIG. 2 shows a schematic diagram of the passage switching mechanism. Fig. 2a shows the state of the passage switching mechanism when the outlet of the tubular container and the outlet of the capillary container are in communication and a sample is being collected, and Fig. 2b shows the state of the passage switching mechanism when the outlet of the tubular container is in communication with the outlet of the capillary container. It is open at the bottom and shows the state of the passage switching mechanism when collecting the reduced sample.

Claims (1)

[Scope of utility model registration request] A container consisting of two chambers: a tubular container and a capillary container with a smaller volume than the tubular container, the capillary container having a discharge port at the bottom, and the tubular container having a discharge port at the bottom near the discharge port of the capillary container. A passage switching mechanism is provided between the two discharge ports, and the passage switching mechanism is composed of a body and a core provided in the body so as to be able to move forward and backward in a plunger type, and the body is connected to a tubular container. and a third hole on the side opposite to the second hole corresponding to the outlet of the thin tubular container, The core has a communication passage extending in the longitudinal direction of the core for communicating the first and second holes of the body, and the core is advanced from that position until the first hole is closed. second time
A sample collecting device comprising a through hole that radially traverses the core for communicating the second hole and the third hole in a portion that communicates with the hole.